Chuck Sears The Rule of 69 is a financial shortcut used to estimate how long it will take for an investment to double when interest is compounded continuously. It is similar to the Rule of 72, which is used for standard compounding, but the Rule of 69 is more precise for continuous growth.
This method is useful for quick calculations but does not provide exact results. It is commonly used in finance, economics, and population studies to estimate growth rates
if an investment grows at 6% per year, the time required to double would be:
69/6 = 11.5 years
This method is useful for quick calculations but does not provide exact results. It is commonly used in finance, economics, and population studies to estimate growth rates
